Uveitis is an acute or chronic inflammatory condition of unknown etiology. Although uveitis often responds adequately to topical corticosteroids, there are many patients for which this treatment is either inadequate or not tolerated. A patient with inadequate response to treatment would manifest uveitis activity by slit lamp examination determination of anterior chamber cellularity. Lack of tolerance of therapy commonly manifests as ocular hypertension (greater than 21 mmHg measured by tonometry)complicating chronic topical corticosteroid administration, leading to glaucoma and permanent visual loss. Moreover, systemic corticosteroids may be required at a dose unsafe for chronic administration. In these situations, an immunosuppressive medication is often added as a "steroid-sparing" agent. If and when there is clinical response to the added immunosuppressive, the oral and/or topical corticosteroid dose can be reduced or eliminated to avoid toxicity.